What action should be taken if a flame goes out during boiler operation?

When a flame goes out during boiler operation, the most appropriate action is to shut down immediately. This is essential for several reasons: safety is the primary concern. An extinguished flame can lead to the buildup of unburned fuel, which creates a hazard for explosions or fire if it comes into contact with a spark or flame. Additionally, continuing operations without a flame could cause damage to the boiler itself, including overheating or damage due to improper combustion, which can affect system integrity and lead to costly repairs.

Shutting down the boiler allows for a controlled evaluation of the issue. Operators can inspect for reasons why the flame went out, such as fuel supply issues, air supply problems, or possible system malfunctions. With safety as a paramount concern, this procedure helps ensure the safety of personnel and prevents further complications during operation.

Other options like increasing fuel flow or igniting a new flame could exacerbate the situation without understanding the underlying cause of the extinguished flame, and simply monitoring the flame does not address the potentially dangerous condition that could arise from a flame failure. Hence, the immediate shutdown action is crucial in safeguarding both personnel and equipment during such an event.